I feel it is important to compare the measurable benefits of birth support against actual statistics. These statistics are taken from Australia's Mothers & Babies Report 2007 which are the latest statistics available.
Benefits and Statistic
Good birth support can reduce the need for Syntocinon (the drug for induction) by up to 40%
Good birth support can reduce the need for epidurals by up to 60%
Good birth support can reduce the need for narcotics by up to 30%
Good birth support can reduce the need for a caesarean by up to 50%
Good birth support can reduce the need for assisted births by up to 40%
Other Interesting Statistics from 2007
Health Sector Statistics
Normal vaginal birth Public 63% Private 42%
Assisted deliveries Public 10% Private 15%
Caesarean Public 27% Private 39%